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EWG's Tap Water Database

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Chromium (total)

City of Chicago

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND20ND
2011ND20ND
2012ND20ND
20130.140 ppb53ND - 0.300 ppb
20140.200 ppb1412ND - 0.300 ppb
20150.200 ppb64ND - 0.300 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)100 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-01-11SA00291-01_01ND
2010-01-12SA00352-01_01ND
2011-01-10SA10318-01_02ND
2011-01-10SA10303-01_02ND
2012-01-10SA20328-01_02ND
2012-01-10SA20333-01_02ND
2013-01-08SA30176-01_02ND
2013-01-08SA30177-01_02ND
2013-10-2329178760.200 ppb
2013-10-2329178740.200 ppb
2013-10-2329178780.300 ppb
2014-02-11SB40289-01_02ND
2014-02-11SB40288-01_02ND
2014-04-2830157410.200 ppb
2014-04-2830157570.200 ppb
2014-04-2830157180.200 ppb
2014-04-2830157080.200 ppb
2014-08-1330817260.200 ppb
2014-08-1330817460.200 ppb
2014-08-1330817340.200 ppb
2014-08-1330817490.200 ppb
2014-10-0731189920.300 ppb
2014-10-0731189880.300 ppb
2014-10-0731189730.300 ppb
2014-10-0731189770.300 ppb
2015-01-12SA50260-01_02ND
2015-01-12SA50259-01_02ND
2015-01-1331694010.300 ppb
2015-01-1331695380.300 ppb
2015-01-1331695340.300 ppb
2015-01-1331693810.300 ppb